Auto Vantage, an insurance company for motorists, has come out with its annual survey of cities with the worst instances of aggressive drivers and road rage. This year’s winner is Houston which moved from eighth place in 2013 all the way to first. Portland Oregon placed first in the category of most courteous drivers for the second year in a row. Congratulations to the winners! Read more: AutoVantage Survey on Road Rage Highlights Best, Worst American Cities